you don't need OEM. you need to know if you have the original TPMS system (gen1) or gen2. Gen2 allows for individual psi readings to be continuously displayed on the IC display.
Sounds like you have gen1 (?).. make sure that the system is working and the problem is the sensor(s)... Considering you just changed tires/wheels, that is the likely situation.
There is an issue with resetting the TPMS on gen1 systems.. I upgraded to gen2, so can't speak to that issue (the tpms reset button was removed/forgotten at one point, and folks are kind of SOL now, except for going in to the service center.)
these should work fine for gen1
https://www.amazon.com/MOBILETRON-M...----&vehicleName=2012+Tesla+S#customerReviews
and I can vouch for these for gen 2:
https://www.amazon.com/gp/product/B0768S4SXR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1